store parameters in iPhone

I try to store parameters in iphone application

开发者_开发技巧for example I want to store username and password after login.

And next time when I re-open iphone application, I can re-get that username and password to login automatically.

Thank you!

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For security related information you really should use the keychain.

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You can use NSUserDefault. Read about it here NSUserDefaults

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SQLLite is a good way of storing APP. data. Here is a good beginner tutorial:

http://dblog.com.au/iphone-development-tutorials/iphone-sdk-tutorial-reading-data-from-a-sqlite-database/